190405-N-OX029-2001 SOUTH CHINA SEA (April 5, 2019) U.S. Navy Sailors work alongside service members from the Armed Forces of the Philippines during an air defense exercise (ADEX) in support of Exercise Balikatan 2019. In its 35th iteration, Balikatan is an annual U.S.-Philippine military training exercise focused on a variety of missions, including humanitarian assistance and disaster relief, counter-terrorism, and other combined military operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Benjamin F. Davella III/Released)